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Commit fbc85402 authored by Lukas Czerner's avatar Lukas Czerner Committed by Jan Kara
Browse files

ext3: remove deprecated oldalloc 



For a long time now orlov is the default block allocator in the ext3. It
performs better than the old one and no one seems to claim otherwise so
we can safely drop it and make oldalloc and orlov mount option
deprecated.

Signed-off-by: default avatarLukas Czerner <lczerner@redhat.com>
Signed-off-by: default avatarJan Kara <jack@suse.cz>
parent 46130222

Documentation/filesystems/ext3.txt

+0 −8
Original line number Diff line number Diff line
@@ -73,14 +73,6 @@ nobarrier (*) This also requires an IO stack which can support 
			also be used to enable or disable barriers, for

			consistency with other ext3 mount options.



orlov		(*)	This enables the new Orlov block allocator. It is

			enabled by default.



oldalloc		This disables the Orlov block allocator and enables

			the old block allocator.  Orlov should have better

			performance - we'd like to get some feedback if it's

			the contrary for you.



user_xattr		Enables Extended User Attributes.  Additionally, you

			need to have extended attribute support enabled in the

			kernel configuration (CONFIG_EXT3_FS_XATTR).  See the

fs/ext3/ialloc.c

+3 −42
Original line number Diff line number Diff line
@@ -177,42 +177,6 @@ void ext3_free_inode (handle_t *handle, struct inode * inode) 
	ext3_std_error(sb, fatal);

}



/*

 * There are two policies for allocating an inode.  If the new inode is

 * a directory, then a forward search is made for a block group with both

 * free space and a low directory-to-inode ratio; if that fails, then of

 * the groups with above-average free space, that group with the fewest

 * directories already is chosen.

 *

 * For other inodes, search forward from the parent directory\'s block

 * group to find a free inode.

 */

static int find_group_dir(struct super_block *sb, struct inode *parent)

{

	int ngroups = EXT3_SB(sb)->s_groups_count;

	unsigned int freei, avefreei;

	struct ext3_group_desc *desc, *best_desc = NULL;

	int group, best_group = -1;



	freei = percpu_counter_read_positive(&EXT3_SB(sb)->s_freeinodes_counter);

	avefreei = freei / ngroups;



	for (group = 0; group < ngroups; group++) {

		desc = ext3_get_group_desc (sb, group, NULL);

		if (!desc || !desc->bg_free_inodes_count)

			continue;

		if (le16_to_cpu(desc->bg_free_inodes_count) < avefreei)

			continue;

		if (!best_desc ||

		    (le16_to_cpu(desc->bg_free_blocks_count) >

		     le16_to_cpu(best_desc->bg_free_blocks_count))) {

			best_group = group;

			best_desc = desc;

		}

	}

	return best_group;

}



/*

 * Orlov's allocator for directories.

 *
@@ -436,12 +400,9 @@ struct inode *ext3_new_inode(handle_t *handle, struct inode * dir, 


	sbi = EXT3_SB(sb);

	es = sbi->s_es;

	if (S_ISDIR(mode)) {

		if (test_opt (sb, OLDALLOC))

			group = find_group_dir(sb, dir);

		else

	if (S_ISDIR(mode))

		group = find_group_orlov(sb, dir);

	} else

	else

		group = find_group_other(sb, dir);



	err = -ENOSPC;

fs/ext3/super.c

+4 −4
Original line number Diff line number Diff line
@@ -652,8 +652,6 @@ static int ext3_show_options(struct seq_file *seq, struct vfsmount *vfs) 
		seq_puts(seq, ",nouid32");

	if (test_opt(sb, DEBUG))

		seq_puts(seq, ",debug");

	if (test_opt(sb, OLDALLOC))

		seq_puts(seq, ",oldalloc");

#ifdef CONFIG_EXT3_FS_XATTR

	if (test_opt(sb, XATTR_USER))

		seq_puts(seq, ",user_xattr");
@@ -1049,10 +1047,12 @@ static int parse_options (char *options, struct super_block *sb, 
			set_opt (sbi->s_mount_opt, DEBUG);

			break;

		case Opt_oldalloc:

			set_opt (sbi->s_mount_opt, OLDALLOC);

			ext3_msg(sb, KERN_WARNING,

				"Ignoring deprecated oldalloc option");

			break;

		case Opt_orlov:

			clear_opt (sbi->s_mount_opt, OLDALLOC);

			ext3_msg(sb, KERN_WARNING,

				"Ignoring deprecated orlov option");

			break;

#ifdef CONFIG_EXT3_FS_XATTR

		case Opt_user_xattr:

include/linux/ext3_fs.h

+1 −1
Original line number Diff line number Diff line
@@ -381,7 +381,7 @@ struct ext3_inode { 
 * Mount flags

 */

#define EXT3_MOUNT_CHECK		0x00001	/* Do mount-time checks */

#define EXT3_MOUNT_OLDALLOC		0x00002  /* Don't use the new Orlov allocator */

/* EXT3_MOUNT_OLDALLOC was there */

#define EXT3_MOUNT_GRPID		0x00004	/* Create files with directory's group */

#define EXT3_MOUNT_DEBUG		0x00008	/* Some debugging messages */

#define EXT3_MOUNT_ERRORS_CONT		0x00010	/* Continue on errors */